Improved centriftyg-al ore-separator



, s 51am @zum l (titi s. T. PEAVRGE, or 4New YORK, N. Y.v

i l Letters'Patent No. 87,360, dated M11/rch 2, 1869.

IMPRQVED- CENTRIIUGAL ORE-SEPARATO.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern.: v

Be it known that I, S. '.l.` PEARCE, of New York, in the county of New York, and State of New York, have invented a new and useful yImprovement in Ore-Separating Apparatus; and I do herebydeclare that the following` is a full, clear, and exact description thereof, which will enable othersI skilled in the art to make and usethe same, reference being had to the accompanying drawings, forming part of this specification rlhis invention .relates to improvements in ore-separating apparatus, such as describedl in the patent granted to me, August 4,1868, whereby the separation is accomplished by the combined influences of centrif- `ugal force and gravitation, under the action ofV which the ore is deposited, in regular gradatious, inseparate receptacles; and this invention relates especially to the arrangement of the said receptacles, and a method of removing it therefrom. Figure 1 represents a transverse sectional elevation of my improved apparatus, and

Figure 2 represents a planview of the same. `Similar letters of reference indicate corresponding parts.v .i v

According to the invention llieretofore patented to me,`as above referred to, the pulverized ore is delivered through an adjustable vertical tube, A, either to hollow horizontally-projecting arms vfrom the bottoni `of the 'said tube, or to-a disk orhollpw vessel,under rotary motion, whereby theore is-.thrown oi by the centrifugal force thus communicated to it, and deposited at various distances, according to the diiierent velocities acquired by the particles, and the resistance to the same of the air and gravitation. i

Thus, those particles having the greatest gravity, in

proportion `to volume,wil1 be projected the farthest,

while those having these qualities in the opposite degree, will fall into the receptacles nearest the startingpoint.

Instead of arran ging the receptacles as th ereiu shown for the delivery of the ore, I arrange them as represented at O, and provide therein brushes, D, having rotary motion around the central axis of the said receptacles, and

capableof brushing the deposit around to the spouts or conductors E, by which it may be carried away to receptacles otherwise provided for it, or to be conveyed `to other separating-apparatus. Y

The plan I have adopted in this example for operating the said brushes, consists in suspending the brushes adj ustably from arms, F, connected to a sleeve, G, supported on the axis of the disk B, and to a circular-toothed rack, H, supported on friction-rollers, I, in brackets, K, projecting `from the framing, and oper- .ated by a pinion, L, which may be operated by any competentmeans, but any other preferred arrangement of the said parts -may be adopted.

Instead of rotating the tube A, asin the aforesaid patented arrangement, I prefer, in this case, to iix it in a stationary condition, and cause the disk Bto rotate, and for this purpose I suspend itvupon a vertical shaft, M, and communicate motion thereto by the shaftv N and gears O.

I also propose lto make the said disk adjustable vertically, as clearly represented,'whereby the How of the pulverized ore through or over it may be regulated.

Having thus described my invention,

I claim as new, and desire to secure by Letters Patent- 1. 'The combination of the annular receptacles C,

provided with the openings E of the brushes D, and the distributing-disk B, or the equivalent of the latter, ,i

signed ,byv 

